厝火積薪 [－－积－]

Jyutping cou3 fo2 zik1 san1
Pinyin cuò huǒ jī xīn

Definitions (CC-CEDICT)
  1. lit. to put a fire under a pile of firewood (idiom)
  2. fig. hidden danger
  3. imminent danger
Definitions (Wiktionary)
  1. phrase, figuratively, idiomatic
    hidden danger